David Ta

With a great interest in programming and development process, I am currently pursuing Honour Bachelor of Science at University of Toronto. I specialize in Computer Science with Math minor.

As a passionate developer, I consider programming as hobby and a profession. I have multiple school and personal projects, some related to game, software and web developments. I build these works collaboratively and independently.

I often describe myself as a completionist. A job worth doing is a job worth complete. My motto has always been: "do your best, and you won't feel ashamed". Therefore, I will complete any job with 100% effort.

• Univeristy of Toronto

  Expected May 2020

  • Computer Science Specialist
  • Dean's List 2017
  • Courses Taken:
    • Intro to Software Engineering
    • Intro to AI
    • Programming on the Web
    • Intro to Databases
    • Software Tools and Systems Programming
    • Algo. Design and Analysis
    • Computational Complexity & Computability
    • Operating System
    • Principle of Computer Networks
    • Capstone Design

• URL Shortner

  • Service is deployed as docker containers.Pairs of URLs and shortened URLs stored on redis and posgres docker images.
  • Stateless APIs are developed with java socket. Jedis and posgres libraries are tools to access database.
  • Redis is utilized to optimize GET requests and to and duplicate URLs for PUT requests. PostgreSQL's plays as a persistent database. Both databases have same treatment for PUT requests.

• RPlace Clone

  • The service is deployed on Amazon AWS. EC2 Autoscaling runs as APIs. ElasticCache (Redis) and RDS(PostgreSQL) are database servers. Service is masked under Elastic Load Balancing.
  • The 250x250 board is stored as a 12000x12000 bitfeld on Redis where every 24 bits represents a RGBcolor pixel on the actual board. Another board is stored on PostgreSQL as persistent database.
  • API servers are maintained through nodejs socket processes. Servers also utilize PM2 for processmanagement. APIs prefer pg and redis modules as tools to access internet-restricted database servers.

• MD5 Numeric Breaker

  • The service runs on a spark cluster
  • It generates all possible numeric strings with a specifics length as pairs of that string and its MD5 hash.
  • It will then distrubte that set of string among cluster's machines and compare with the target string's MD5

• Youtube Trimmer

  • The service deploys on docker and scales through OpenFaas.
  • It will use youtube-dl service to download a specific youtube video via that youtube URL
  • It will then utilize built-in ffmpeg service on unix computer to trim such youtube video.

• Titanium Storm:

  • A 2D turned based game developed in Unity3D. Gameplay is a strategy platform similar to the X-COM series.
  • Game utilized A-star algorithm as path finder for enemy entities.
  • Game is incrementally developed using scrum development process.

• Time Runner:

  • A 2D platform game developed in Unity3D. Game is designed for IOS and Android phones .
  • Game frame scrolls continously from right to left to gives an illusion of characters moving.
  • Enemy Entities are created on the right frame and removed when they fall out of the frame.

• Marvin Chat Bot:

  • Chat bot uses socket programming in C to communicate with users
  • CHat bot takes advantage of string manipulation and regex for string processing
  • Built-in arithmetic operations works on background to perform basic math calculation.

• Chest Hunter:

  • A 2D click-n-run java game is developed in JFrame.
  • Enemy entities utilizes A-star algorithm for pathfinding.
  • Test-driven development process is employed for software development.

• Restaurant Smash:

  • A web application for voting from a list of restaurants.
  • Back-end utilizes PHP for app management and request handlers. Database is managed through PostgreSQL.
  • Front-end app is constructed with HTML, Rest-api and MVC architecture

• Warehouse War:

  • JS, React and HTML presents the video game on 2D tiles where each tile represents a rendered entity.
  • Back-end is developed with PHP for game engine and database management. PostgreSQL is used to store user account information.
  • Enemy entities can find a nearby player within a certain radius and plan an optimal path thanks to A-star algorithm.

• JShell:

  • A shell clone is developed in Java to simulate many commands of a bash shell.
  • Commands utilize with string manipulation and regex for string handlers.
  • App is incrementally developed using scrum development process.

• DeadLock Intersection:

  • A C kernel program simulated a traffic system that coordinates cars going through an intersection.
  • It utilizes primitive synchronization to avoid 2 or more cars approach a same quadrant at the same time.
  • A traffic monitor guides each car when they approach the main intersection and ensure it can go safely.

• Syscall Interceptor:

  • A C kernel program hijacks a system call
  • It will then replace that syscall with our own syscall.
  • It utilizes synchronization to ensure the consistency of data structures.

• Pagetable Replacement:

  • A C kernel program simulates pagetable and page replacement modules.
  • It will take a trace memory of a program. From that, it will gather page directory and perform a address translation to find virtual address from simulated physical address
  • It will then compare various pagetable replacement algorithms to test the translation and paging functionality.

• Pacman:

  • A simulation of Pacman game on PC
  • Implemented A.I., tree search, and A-star algorithm.
  • Written in Python.

• Pacman Multiagent:

  • A simulation of Pacman game on PC
  • Implemented A.I. and game tree search.
  • Written in Python.

• Nqueen Challange:

  • Implemented set eliminations and backtracking.
  • Written in Python.

• Sphere Rolling:

  • A 3D causual PC game
  • Designed game physics, mechanics and levels.
  • Compressed an installation file for windows
  • Writen with Unity(C#).

• "Petty" Thief:

  • The novel game is developed in twinery.
  • The game has time-management element.
  • The game offers a moral question for further playthroughs.

• Hunting Trip

  • The novel game is developed in twinery.
  • The story is enriched with multiple endings and a hint of humor.

• Object-oriented: Python, C/C++/C#, Java.
• Web: PHP, NodeJS, HTML, jQuery, React, Faas, Ajax, rest-api, css.
• Databases: SQL (mySQL & PostgreSQL), NoSQL (DynamoDB & MongoDB), Redis.
• Others: Shell, Spark(Scala).
• Functional Programming: Racket(scheme), Haskell, Assembly(MISP).
• Development Process and Tools: Agile, Scrum, Waterfall, Test-driven, MVC, Git, SVN, AWS, PM2, Unity, V-Rep.
• OS expierence: UNIX/Linux, Window

Resume

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